<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <title>Simple Nav</title>
    <!-- 版本：0.0.2 -->
    <link href="https://cdn.bootcss.com/minireset.css/0.0.2/minireset.min.css" rel="stylesheet">



    <!-- 最新版本的 Bootstrap 核心 CSS 文件 -->
    <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
    <!-- 可选的 Bootstrap 主题文件（一般不用引入） -->
    <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">

    <link rel="stylesheet" type="text/css" href="css/common.css">
    <link rel="stylesheet" type="text/css" href="css/pc/default.css">
    <link rel="stylesheet" type="text/css" href="css/wap/smallnav.css">
    <link rel="stylesheet" type="text/css" href="css/theme.css">

    <style type="text/css">


    </style>
</head>
<body>
<header class="header">
    <div class="logo ">
        <div class="logoimg"></div>
        <div class="smallmenu">
            <span></span>
            <span></span>
            <span></span>
        </div>
        <div class="cover"></div>
    </div>
    <ul class="menu fr">
        <li class="item"><a class="_active" href="">首页</a></li>
        <li class="item"><a href="">课程</a></li>
        <li class="item"><a href="">实训室</a></li>
        <li class="item"><a href="">我的</a></li>
    </ul>
</header>

<div class="wrap">
    内容在这里
</div>
</body>

<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
<!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
<script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>

<script type="text/javascript">

    $('.smallmenu').on('click',function(){
        $('.cover').addClass('l0');
        $('.menu').addClass('l0');
    })

    $('.cover').on('click',function(){
        $('.cover').removeClass('l0');
        $('.menu').removeClass('l0');
    })

</script>
</html>